 |
North Carolina Administrative Code (Last Updated: November 13, 2014) |
 |
TITLE 15A. ENVIRONMENT AND NATURAL RESOURCES |
|
CHAPTER 18. ENVIRONMENTAL HEALTH |
|
SUBCHAPTER D. WATER TREATMENT FACILITY OPERATORS |
15A NCAC 18D .0203. DETERMINATION OF VARIOUS CLASSES OF CERTIFICATION
-
(a) Determination of various classes of certification shall be based on the classification of water treatment facilities to be operated.
(b) The designation of plant classification shall be based on the following point system:
PARAMETER RATING VALUE
(1) Surface Water Source
(A) flowing stream 5
(B) flowing stream with impoundment 7
(C) raw water treatment 3
(2) Ground Water Source
(A) first five wells 5
(B) add 1 point per 5 wells or fraction thereof over 5 1
(3) Coagulation
(A) aluminum sulfate, ferric chloride 10
(B) polymer 5
(4) Mixing
(A) baffle 2
(B) mechanical 4
(C) air 3
(5) Oxidation (pre‑treatment)
(A) C1202 5
(B) ozone 5
(C) KMn04 3
(D) C12 3
(6) Carbon Treatment 2
(7) Aeration
(A) mechanical draft 3
(B) coke tray/splash tray 2
(C) diffused 3
(D) packed tower (VOC reduction) 10
(8) pH Adjustment (primary)
(A) caustic (NaOH) 10
(B) lime/soda ash 3
(C) acid 10
(9) Sedimentation
(A) standard rate 5
(B) tube settlers 3
(C) upflow 8
(D) pulsators and plates 5
(10) Contact Tank 1
(11) Filtration
(A) pressure
(i) sand/anthracite 8
(ii) synthetic media (birm) 8
(iii) granular activated carbon (GAC) 10
(B) gravity
(i) sand 10
(ii) anthracite (mixed)/GAC 12
(iii) with surface wash or air scour 2
(C) membrane 10
(12) Ion Exchange
(A) softener, Na cycle 5
(B) softener, H cycle 7
(C) Fe and Mn (greensand) 10
(D) mixed bed or split stream 12
(13) Lime Softening
(A) spiractors 10
(B) clarifier with coagulation 12
(C) fuel burner (recarbonation) 5
(14) Phosphate (sequestering agent) 5
(15) Stabilization
(A) acid feed 10
(B) phosphate 2
(C) caustic (NaOH) 10
(D) lime/soda ash 3
(E) contact units 5
(16) Reverse Osmosis, Electrodialysis 15
(17) Disinfection
(A) gas C12 10
(B) hypochlorite solution 7
(C) C1202(sodium chlorite and C12) 13
(D) ozone 13
(E) ammonia and C12 12
(F) ultraviolet light (uv) 5
(18) Fluoridation
(A) saturator 8
(B) dry feed 8
(C) solution (acid) 10
(19) Pumping
(A) raw 3
(B) intermediate 1
(C) finished 3
(D) system booster 2
(20) Storage
(A) raw 1
(B) treated ground level tank 1
(C) elevated in system (each extra tank 1 pt) 2
(D) hydropneumatic 2
(21) Population Served 1 point per 1,000 persons served 50 max.
(22) Plant Capacity 1 point per 1 MGD capacity 25 max.
(23) On‑Site Quality Control
(A) bacteriological
(i) MPN/MF 5
(ii) HPC 2
(iii) MMO‑MUG (Colilert) 2
(B) pH
(i) meter 2
(ii) test kit 1
(C) fluoride
(i) meter 3
(ii) colorimetric 3
(D) chlorine
(i) titrator 3
(ii) colorimeter/spec. 2
(iii) test kit 1
(E) iron 1
(F) hardness 1
(G) alkalinity 1
(H) turbidity 1
(I) manganese 1
(J) others (1 pt. each) 1
(K) A.A. Spec, or G.C. Unit 5 each
(c) The designation of distribution system classifications shall be based on system characteristics as outlined in Rule .0205 of this Section.
History Note: Authority G.S. 90A‑21(c); 90A‑22;
Eff. February 1, 1976;
Readopted Eff. March 1, 1979;
Amended Eff. August 1, 2000; August 3, 1992; January 1, 1992; September 1, 1990.